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Hydrogen
Hydrogen plays an important role in climate protection.
It can be used in many ways
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in industry
in heat and power generation
in transport.
In power-to-gas plants, hydrogen is produced from renewable electricity in a CO 2 -neutral way. The hydrogen produced can be stored in the gas grid over the long term, transported to other locations and then used there.
DIN CEN/TR 17797 09/2022 - pdf-file -
192,50 €*
This document DIN CEN TR 17797 is written in preparation of
future standardization and provides guidance on how injection of H2 into the
gas infrastructure can impact processes from the input of gas into the on-shore
transmission network up to the inlet connection of gas appliances.
Forschungsbericht G 202006 01/2023 -pdf-file-
246,10 €*
For hydrogen transmission within the German gas grid, it is
imperative to obtain a clearly defined assessment of steel components for hydrogen
suitability and relevant implementation in the DVGW Codes of Practice. Within this context, DVGW
Code of Practice G 409 (for the conversion of pipelines to hydrogen transmission) and
DVGW Code of Practice G 463 (for the construction of new pipelines), for example, have
been specifically aligned to hydrogen as a transmission medium. Both these codes of practice may
require a fracture-mechanical assessment of pipelines and pipeline components, with fracture-mechanical
parameters beingrequired as input variables.
So far, it was only in ASME B 31.12 [3] that these
parameters were specified in an international code of practice. They specifically involve minimum fracture
toughness (KIc) and the description of crack toughness (da/dN) with hydrogen as a
medium. However, the parameters specified in ASME B 31.12 were based on investigations on US
materials which are verysimilar, but not identical, to the materials used in Germany
and elsewhere in Europe. Furthermore, the conversion of existing older natural gas
pipelines (comprising older materials) is of very considerable interest particularly for the scope
of application of the DVGW Code of Practice, although a direct transferability of the US
investigations was considered to be problematic.
Hence, within the context of the DVGW’s extensive SyWeSt H2
research project, fracturemechanical investigations were performed specifically for the pipeline
steel grades used in Germany (and, in some cases, elsewhere in Europe) with
hydrogen as a medium. The objective of this project was to compare the established
fracture-mechanical parameters with the results on which ASME B 31.12 is based for the purpose
of validating their application to steel grades used in Germany and, where applicable, drawing
up a modified correlation for crack growth.
G 260 Technical Rule 09/2021
106,33 €*
This Technical Rule G 260 specifies the
requirements for the quality of fuel gases used
in the supply of the general public with gas and
sets the parameters for gas delivery, gas
transportation, gas distribution, gas storage,
operation of gas plants/systems and gas
appliances for commercial and industrial gas
applications as well as for development,
standardization, and testing.
Gases transported in separate pipelines which are
not used in the supply of the general public, or
are used as energy carrier or resource, and/or
are used in special gas appliances are not
subject to the scope of this Technical Rule.
G 452-3 Technical Information - Guideline 03/2021
38,35 €*
G 452‑3 Technical Information ‑ Guideline 03/2021
G 463 Technical Rule - Standard 10/2021 -PDF file-
76,15 €*
In
conjunction with DIN EN 1594, this Technical Rule G 463 applies to the planning
and construction of steel high pressure gas pipelines with a design pressure of
more than 16 bar for supplying gas to the general public as well as to
connected energy facilities on company premises and in the field of commercial
gas application of gases of the 2nd and 5th gas family as defined by DVGW Code
of Practice G 260.
The scope
of application has no upwards limitation in terms of the technical parameters
nominal diameter and design pressure.
This
Technical Rule can be applied mutatis mutandis to the construction of high
pressure gas pipelines which do not conform to the specifications of DVGW Code
of Practice G 260, provided that the specific characteristics of the gases or,
if applicable, other already existing technical sets of rules are taken into
account.